Coupling for drill-rods, line-shafts, or other devices.



No. 734,107. PATENF'EBD JULY 21, 1003.

F. J. THORING.

COUPLING FOR DRILL RODS, LINE SHAFT S, OR OTHER DEVICES. APPLIOATIONFILED 00123, 1902..

no MODEL.

m mum mil .. yu I VII/Aw A? v UNITED STATES Patented July 21, 1903. I

PATENT OFFICE.

FREDRIOK J. THORING, OF LIMA, OHIO.

SPECIFICATION forming part of Letters Patent N 0. 734,107, dated July21, 1903. Applicatign filed October 23,1902. Serial No. 1281 453. (N0model.)

To all whom it may concern/.-

Be it known that'I, FREDRIoK J. THORING, a citizen of the United States,residing at Lima, in the county of Allen and State of Ohio, haveinvented certain new and useful Improvements in Couplings forDrill-Rods, Line-Shafts, or other Devices; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention is an improved coupling for drill-rods, line shafts, andother devices; and it consists in the peculiar construction andcombination of devices hereinafter fully described and claimed.

The object of my invention is to provide an efficient coupling for drillrods, lineshafts, and other devices which is adapted for coupling twomembers thereof together and keeping them permanently in line with eachother when coupled, afurther object of my invention being to provideimproved means for taking up the Wear of the coupled members to preventthe coupling from be coming loose.

In the accompanying drawings, Figure l is partly an elevation and partlya longitudinal sectional view of a coupling embodying my improvements.Fig. 2 is a similar view partly in section on the line a a of Fig. 1,and Fig. 3 is a transverse section taken on the line b b of Fig. 1.

In the embodiment of my invention here shown the member 1 of thecoupling is provided at one end with a centrally-disposed projectingcoupling-stem 2, which is angular in cross-section. At the base of thiscoupling-stem are radially-disposed engaging tongues 3. The stem isprovided at a suitable distance from its outer or upper end with atransverse opening 4, which is here shownas angular in cross-section. Amember 5 of the coupling is provided with a 1ongitudinal bore 6, whichcorresponds in size and shape with the coupling-stem 2 and is adapted toreceive the latter, whereby the two members of the coupling may betelescopically fitted together. At the end of the member 5 are notches 6to receive the engaging tongues or flanges 3. The said notches, flanges,or tongues, stem 2, and bore 6 coact with relation to the other.

to prevent either of the members of the coupling from turning axially toany extent The member 5 is also provided in opposite sides with openings7, which when the said members 1 5 are fitted together coincide with theopening 4 of the coupling-stem 2. In the said o'penings4 7 is fitted atransversely-tlisposed locking member 8, which is here shown as a key1ongitudinally divided into two sections or members 9. The said members9 are provided on their outer sides at their inner ends with studs 10,which engage countersinks 11 in the upper and lowerends of one of theopenings 7. Between the opposing sides of the members of the split key 8is formed a screwthreaded tapered bore 12. In order to expand thelocking member 8 laterally to clamp the same firmly in the alinedopenings of the coupledimembers, I provide a tapered wedgescrew 13,which is adapted to be screwed in the correspondingly-tapered threadedopening between the members of the said locking-key. This wedge-screw ishere shown as provided at its outer end with an angular stud 14, whichis adapted to be turned by a suitable key-wrench 15.

From the foregoing description, taken in connection with theaccompanyingdrawings, the construction, operation, and advantages of myinvention will be readily apparent, it is thought, Without requiring amore extended explanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to Without departing from the principle orsacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a coupling of the class described, a pair of telescoping membershaving coincident transverse openings, in combination with the laterallyexpansible locking member in said openings, and means to expand saidmember, substantially as described.

'2. In a coupling of the class described, a pair of telescoping membershaving coincident transverse openings, in combination with a lockingmember in said openings having a pair of longitudinal members, and

means to expand said members laterally and bore to expand saidlocking-key laterally, thereby clamp said locking member in saidsubstantially as described. openings, substantially as described. Intestimony whereof I have hereunto set 3. In a coupling of the classdescribed, a my hand in presence of two subscribing wit- 5 pair oftelescoping members having coincinesses.

dent transverse openings, in combination with a locking-key in saidopenings, said FREDRIOK T key comprising a pair of longitudinal sec-Witnesses:

tions having a tapered threaded bore in their JAS. GORMAN,

io opposing sides, and a wedge-screw in said M. J. SULLIVAN.

